Improvement in door-fasteners



W. WILLIAMS. Door-Fastener.

No. 221,645. Patented Nov. 11,1879.

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PETERS. PHOTO-LITHOGIIAFMEB, WASHINGTON. D. C.

UNITED STATES PATENT OFFICE.

WILLIAM WILLIAMS, OF HARRISONBURG, VIRGINIA.

l-M PROVEM ENT IN DOOR-FASTENERS.

Specification forming part of Letters Patent No. 221,645, dated November11, 1879 application filed September 20, 1878.

To all whom it may concern:

Be it known that 1, WILLIAM WILLIAMS, of Harrisonbur'g, county ofRockingham, and State of Virginia, have invented a new and improved modeof preventing railway-car doors and other doors from falling or slammingclose when left open; and I do hereby declare that the following isafull and exact description thereof, reference being had to theaccompanying drawing, and the letters of reference marked thereon.

The invention relates to an improvement in door-checks; and it consistsin the devices hereinafter described and claimed.

A, in-the accompanying drawing, denotes the bolt, having its upperportion formed into a neck, around which is placed a spiral spring tocontrol the movement of the bolt.

The upper end of the neck of the bolt is supplied with a short arm,A,wl1ich projects beyond the casing inclosing the bolt, and serves as a:means of operating the bolt by hand, should it become detached from thewire E,

which connects it with the lower end of a metal plate, B.

The plate B is provided at its upper end with a slot, a, and two curvedslots, b, and is secured in position by means of the handle of the lockpassing through the slot a, the latter being of proper length to allowthe plate B to be moved vertically.

Upon the handle of the lock is also secured a smaller plate, 0, havingtwo arms, (1, which extend outward, one on each side of the plate, andoperate in the slots b. Thus, when the door-knob is turned either to theright or left, one or the other of the arms d will ascend and draw theplate B up with it. This upward movement will also draw the wire-link Eand spring-bolt A upward, freeing the latter from the catch D, fastenedin a suitable position upon the floor, and permitting the door to beopened and closed at will. When the doorknob is released the tension ofthe spiral spring will force the bolt A back to place in the catch D,and the door will remain stationary.

It is plain that when the door-knob is turned the latch is opened andthe spring-bolt A freed simultaneously.

W'hat I claim as my invention, and desire to secure by Letters Patent,is-

The door-check herein described, consisting of the plate B, having slotsat b, the plate 0, having arms d, link E, and spring-bolt A,substantially as specified.

Attest: WM. WILLIAMS.

CHARLES E. HAAS, SAMUEL LOEWNER.

